Pipe coupling



Sept. 23, 1941.

K. L. LANN INGER PIPE COUPLING Filed Sept. "1, 1939 5 Sheets-Shet "1 lllll i v MWEJY Q /& L. LfNVIVI VGER.

Sept. 23, 1941.

K. 1.. LANNINGER 2,256,845

PIPE COUPLING Filed Sept. 1 1939 I s Shegts-Sheet 2 Sept. 23, 1941.

PIPE COUPLING F'il ed Sept. 1, 1939 K; L. LANNINGER 2,256,845

3 Sheets-Sheet 3 m ted an 23.11941 Application September 1, 1939. Serial In G September "I,

ermany 2 Claims.

This invention relates to quick acting pipe couplings for use on pipe lines laid across open country which may require quick re-laying such as for example fire hosesprinkler lines. In particular the invention relines' or spraying or is. 293,122 was I lates to such couplings of the kindin which the end of' one pipe is received in a socket with suitable packing ring on the end of the other pipe and the two pipes are held together by a toggle action clamping lever linked to one pipe and engaging a rocking chair member with pivotin hook terminals on the other pipe. A principal objectof this invention .is to make such pipe couplings capable of being rapidly joined and disconnected.

A further .object is to permit adjacent pipes end, a 1' piece or multi-way piece with sockets on each piece, may be used for Joining branch lines. In such cases there will be a separate toggle action clamping lever for each pipe connected.

The invention is illustrated in the accom 'aanying drawings in which:

construction of the invention with the socket.

in such pipe couplings to be inclined relatively to one another through wide angles sufllcient to adapt themselves to the contour of the. ground across which the pipe line is laid.

A furtherobject of the invention is to provide means for. forcibly disconnecting. the coupling when the pipe sticks in the socket asmay occur on a waste water sprinkler line.

Yet another objector the invention is to provide a simple quick acting pipe coupling which can be operated with one hand.

With these and other objects in view one feature of the invention is the use of an abutment with which the toggle action clamping lever coacts having opposed operative surfaces with one of which the lever co-acts for Joining the coupling and with the other of which it coacts for disconnecting the coupling. According to anotherfeature of the invention the clamping lever makes Fig. 1 is a section of an embodiment according to-the invention with the two pipes ready for connection.

Fig. 2' is a similar view to Fig. 1 but .with the coupling in the connected position.

Fig. 3 is a plan view of the embodiment shown in Figs. 1 and 2.

Fig. 4 is a section ofan alternative form of and V holding part for thering, formed integral with one pipe.

Fig. 5 shows diagrammatically as an branch pipe.

Fig. 6 shows as an application of the principle of my inve'ntion'a double ended socket piece with two attached pipes. Fig. 7 is a fragmentary view of another. embodiment of my invention having a constricted sleeve fitted over the end of one pipe.

Fig-8 illustrates a pipe line using couplings in accordance with the invention. I

Referring to Figs. 1 to 3, the coupling socket c is secured on the endof one pipea by claws l mounted on a clamping ring e1 which engage a point contact with the abutment when in the connected position.

So that the pipe end may the external diameter of the pipe'isless than that of the bore of the packing ring at the end of the pipe and gradually increases to a diameter greater than that of such bore at a short distance from the end. I

' For ease of assembly the end of the pipe may be cut obliquely to its longitudinal axis.

The socket may be secured to the end of a pipe by means of a clamping ring to which the clamping lever is attached by the toggle link.-

The chair with opposed operative surtaces may be easily mated to v the co-operating socket with its annular washer,

be secured to the end or the other pipe. by a simiintegral with the pipe and the toggle link attached to a 1118 on the pipe. 1 1- "A'double ended piece with a socket'on each lar clamping ring. Thesocket may however be J collar m'on the socket. The clamping ring 81-18 secured" on the pipe a by tightening the lower tangentialbolt e.

projecting beyond the end of the pipe 0. of v shaped radial section within which a packing ring d is accommodated. Upon the upper tangential bolt e which passes through 9. lug on the clamping. ring e1, two toggle links I are pivoted. The other ends of these links f are pivoted to the clamping lever g by the bolt h.

The pipe b to be Joined to pipe 11 has a bulbous f terminal gland portion In such that the diameter at its end he is smaller than the bore of the packing ring d whereas the part of greatest diameter b3 0! terminal gland portion In (Fig. 1) v is larger than the bore oi'the ring d. As a result the end of the pipe b'may be easily mated to the socket on the pipe a with its bulbous end or within the ring it.

Adjacent to the bulbous endbi, there is a clamping ring ii from which projects the chair member twith oppositely arranged hook shaped application of the principle of my invention a T shaped socket piece for receiving. two pipe ends and a The socket c has a part n relatively to the pipe 0.

engaging parts 1' and It. When the end of the pipe b has been introduced into the socket the toggle action clamping lever is moved so that its in an anti-clockwise direction (Figs, 1 and 2) until its end i enters the hook shaped engaging.

Part is of the chair t. Further movement will by virtue of the toggle action cause the pipe bio be forced out of the socketc.

The operative faces of the hook shaped pivoting engaging parts 7' and k of the chair t and the end i of the lever g are formed so that only point contact is made between them. As shown, nose or terminal portion i of lever g is advantageously a small round ball. By virtue of this and of the bulbous end bl of the pipe b the latter is able to flex freely within wide limits in all directions (See positions of pipe bin dotted lines in Figs. 2 and 3.) 1

In the embodiment of the invention illustrated in Fig. 4 the socket cr is integral with the pipe a which has a projecting lug p to which is pivoted the toggle links I and g by-means of the bolt e. In this case the end of the pipe b instead of being bulbous is simply constricted so that the diameter of its end he is smaller than the bore of the ring 11 whereas that of-the pipe itself be is larger than the bore of the ring d. Moreover the end b4 of the pipe b is cut obliquely to the horizontal axis. In this way the pipe may be introduced to the socket at any angle without fear of the end b4 failing to center itself within the washer d.

As shown diagrammatically in Fig. 5, there is a T shaped socket piece to receive two pipeends b1, bs and a branch pipeq. Fig. 6 illustrates a the pipe b as shown inFigs. 1 and 2.

Fig. 8 shows a pipe une. having quick acting pipe couplings in accordance with the invention laid across country and illustrates the necessity for these couplings to permit fiexureof adjacent pipes relatively to angles;

What Islam is:

one another through; wide.

1. A quickly connectiblaand disconnectible coupling for connecting. pipe sections in angular relation, comprising,- in combination, a pair-76f pipe sections tobe connected, cooperatingmeans carried by the juxtaposed ends ofthe pipe sections substantially forming a ball and socket Joint, keeper-means carried by one of the pipe sections and including spaced abutments facing a each other and alined longitudinally of the said pipe section, said keeper means being located radially at one point only of the circumference of the pipe section, by which it is carried, a link pivotally carried by the pipe section opposite that having the keeper element thereon, and a lever pivoted intermediate its ends to the free end of said link. one end of said lever being adapted to engage one of said abutments of the keeper element to pull the pipe sectionstogether and to engage. the other of said abutments to forcibly separate the pipe sections. I

2. A quickly co'nnectiblef and disconnectible -pipe. coupling for assembling pipe sections in double ended socket piece ca to receive two pipe ends be and bill. In these two latter figures the clamping mechanism is not shown but there will constricted so as to have dimensions in and ba angular relation, comprising, a pair'of pipe sections, cooperating means formed'on the juxtaposed ends of said pipe sections constituting a ball and socket joint, and means for positively pulling said sections together to hold them in locked relation and subsequently to force the sections apart,'said means comprising a keeper element on one of the pipe sections presenting spaced abutments facing each other and alined longitudinally of the pipe section, and a lever having one end thereof adapted to engage one of saidabutments to draw the pipe'sections into coupling relation and to engage the other ofsaid abutments to force the pipe sections apart, and link means. Divotally connecting the intermediate portion ofthe lever with the pipe section opposite the section which carries the keeper element.

. nunwro L'ANNINGER. 

